Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9138c7ea1fdf1c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 19:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d3bd1d6f4ce675bfaa51bbeb005381de SHA-1: 2e99cde861b818b0a342433f3a9cfe80c8244dd4 SHA-256: fe9138c7ea1fdf1c4502872fe1b46a62f9ee0afd08e5d91dc499c81e476a0ab8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary link identified as a malicious redirector. This redirector is associated with lures for game hacks and free currency, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/free-robux-no-verification-needed-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-cheat-codes-mining-simulator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/i-got-hacked-playing-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-roblox-ccv3-particles-not-patched_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-a-free-pet-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-developers_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/gamepass-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-mm2-coin-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/invited-free-robux-glitch-by-unknown_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-robux-infinito-download-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F27 22080 bytes
SHA-256: 0ce8ecdd8f726c57462df658caed3755cb1ed7aa6e8515ae644786741c1e7cb7
font_01_sfnt_off00006051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6051 19248 bytes
SHA-256: b08a7874b1039348e697072185540dcc8349f662e13696354c6ec42bca015dfe

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